The Sigma 28-200mm f3.5-5.6 DG Macro Lens for Canon Digital SLR Cameras is a compact, high-zoom ratio lens, ideal for full-frame digital SLR cameras. This lens covers all the focal lengths from 28 millimeter wide angle to 200 millimeter telephoto--the most frequently used focal length range. With a maximum diameter of 2.75 inches and length of three inches, this lens is compact and portable enough to be carried anywhere, making it is ideal for travel. This digitally optimized ultra telephoto lens is equipped with the latest in multi-layer coating technology that reduces both flare and ghosting and ensures an accurate color balance and high definition results. The use of aspherical lens elements in both of the front and rear lens groups effectively compensates for aberration throughout the entire zoom range. At the 200 millimeter telephoto setting, the lens is capable of macro photography with a 1:3.8 maximum magnification. A zoom lock switch mechanism is provided to prevent the lens from creeping due to its own weight, and to avoid the danger of the lens receiving a shock while it is being carried. |
